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US4800445A
Expired / Lapsed
US
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Videodisk player
Assignee: Pioneer Corp
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Filing: 1986-02-27
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Granted: 1989-01-24
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Expires: 2006-02-27
Abstract
Abstract A control and reading circuit for a videodisk player, wherein a pulse is generated in synchronization with the rotation of the disk. A subsequent synchronizing signal initiates digitized storage of the playback signal. After storage of sufficient data, the pick up mechanism of a disk detector is caused to jump one or more tracks in a direction dictated by the mode of operation.
Inventors
- 👤 Masao Kanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:08
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B21/00; G11B21/02; G11B21/08; G11B21/081; G11B21/083; G11B27/00; G11B27/005; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/937; G11B2220/00; G11B2220/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
130 words
A controller for a videodisk player for playing back video signals through a pickup from a disk rotating at a constant linear velocity, said controller comprising: a first circuit for generating a rotational pulse synchronous with the rotation of said disk; memory means responsive to an enabling signal for storing the video signals played back; driving means responsive to a jump signal for causing said pickup to execute a jump of at least one track; and control circuit means responsive to at least said rotational pulse for generating said enabling signal, for thereafter terminating said enabling signal upon completion of storage in said memory means of desired data derived from the played back video signal, and for generating said jump signal in response to the termination of said enabling signal.
Claim 2
Dependent Claim
130 words
A controller for a videodisk player for playing back video signals through a pickup from a disk rotating at a constant linear velocity, said controller comprising: a first circuit for generating a rotational pulse synchronous with the rotation of said disk; memory means responsive to an enabling signal for storing the video signals played back; driving means responsive to a jump signal for causing said pickup to execute a jump of at least one track; and control circuit means responsive to at least said rotational pulse for generating said enabling signal, for thereafter terminating said enabling signal upon completion of storage in said memory means of desired data derived from the played back video signal, and for generating said jump signal in response to the termination of said enabling signal.
Claim 3
Dependent Claim
44 words
The controller as recited in claim 1, further comprising means for deriving vertical synchronizing signals from said played back video signal, and wherein said control circuit means is responsive to both said rotational pulse and said vertical synchronizing signal for generating said enabling signal.
Claim 4
Dependent Claim
28 words
The controller as recited in claim 2, wherein said control circuit generates said enabling signal in response to the first vertical synchronizing signal occurring after said rotation pulse.
Claim 5
Dependent Claim
36 words
The controller as recited in claim 2, wherein said control circuit generates said enabling signal in response to a first vertical synchronizing signal and terminates said enabling signal in response to a second vertical synchronizing signal.
Claim 6
Dependent Claim
26 words
The controller as recited in claim 4, wherein said second vertical synchronizing signal is the next vertical synchronizing signal occurring after said first vertical synchronizing signal.
Claim 7
Dependent Claim
51 words
The controller as recited in claim 1, further comprising means for monitoring the storage of said data in said memory and for generating a completion signal upon said completion of storage of desired data in said memory, said control circuit being responsive to said completion signal for terminating said enabling signal.
Claim 8
Dependent Claim
51 words
The controller as recited in claim 2, further comprising means for monitoring the storage of said data in said memory and for generating a completion signal upon said completion of storage of desired data in said memory, said control circuit being responsive to said completion signal for terminating said enabling signal.
Claim 9
Dependent Claim
32 words
The controller as recited in claim 1, wherein said control circuit generates said enabling signal in response to said rotational pulse independently of any synchronizing signals in said played back video signal.
Claim 10
Dependent Claim
26 words
The controller as recited in claim 8, wherein said control circuit terminates said enabling signal independently of any synchronizing signals in said played back video signal.
Claim 11
Dependent Claim
26 words
The controller as recited in claim 1, wherein said control circuit terminates said enabling signal independently of any synchronizing signals in said played back video signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-24 | 1992-07-25 | 1993-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-24 | 1996-07-25 | 1997-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-24 | 2000-07-25 | 2001-01-24 | $7700.00 | Window Closed / Lapsed |